Centrifugal pump.



.l. D. BELL.

CENTRIFUGAL PUMP.

APPHCATION mu) 001226. 1915.

Patented July 16, 1918.

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J. D. BELL.

CENTRIFUGAL PUMP.

APPLICATION men 0cT.2s. 1915.

1,272,606. k Patented July 16, 1918.

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THC NORRIS FIYERS 60,?!4010-L/h/(L. WASHINGTON. n. n.

JAMES D. BELL, 0F SEATTLE, WASHINGTON.

CENTRIFUGAL PUMP.

To all whom it may concern:

I Be it known that I, JAMES D. BELL, a citizen of the United States,residing at Seattle, in the county of King and the State of \Vashington,have invented a certain new and useful Centrifugal Pump, of which thefollowing is a specification.

My invention relates to certain new and useful improvements incentrifugal pumps and more particularly to vertically suspendedcentrifugal pumps. As many of the features of the invention are alsoapplicable to other forms of pumps using a runner or impeller anddepending upon centrifugal force, pressure force or the power of thescrew, however, Ido not limit myself to the first mentioned form ofpump, but wish to include all kinds of water or liquid elevators andmovers in which all or any of the features of my invention may beincorpoi rated.

The primary object of the invention resides in the provision of a selfcontaining pump which, free from all additional parts such as structuralsteel or timber frames,

' should form a unit capable of being shipped cient in use.

A further object of the invention resides in the provision of a circularpump in which the shaft will be supported from the discharge pipe andall frictional resistances be reduced to the minimum'while theefficiency is increased to the maximum, by the peculiar shape. g

A further object resides in the provision of a pump having a stationarypressure chamber studded with or partly supported by three dams, throughwhich the water flows into the water-way of the pump shell, convertingthe velocity of the water into pressure, the pump being of suchcharacter that it may be received in a smaller casing than others of asimilar capacity, the pump furthermore being always primed, as it issubmerged in the water.

With these and other objects in view, as will appear as the nature ofthe invention is better understood, the same consists in the novelcombination and arrangement of parts as will be hereinafter morespecifically set forth, pointed out in the appended claims and shown inthe accompanying drawings.

Patented July 16, 1918.

Application filed October 26, 1915. Serial No. 57,921.

In the accompanying drawings forming a part of this application and inwhich like reference characters refer to corresponding parts throughoutthe several views,

Figure 1 is an elevation of the upper portion of the pump.

Fig. 2 is an elevation of the central portion of the same.

Fig. 3 is a vertical sectional view through the shell and rotor; part ofthe pipe being also shown in section.

Figs. 4, 5, and 6 are views illustrating bearings in which the rotatableshaft is mounted.

Fig. 7 is a vertical sectional view of the shell and Fig. 8 is ahorizontal sectional view of the same.

Fig. 9 is a vertical sectional view of the rotor used in conjunctionwith my improved construction.

Fig. 10 is a horizontal sectional view of the same.

Figs. 11 and 12 are diagrammatic views showing the course of the waterin the shell.

Referring to the drawing the numeral 5 denotes a horizontally arrangedshell, the upper end of which is formed with a bearing 6 and the lowerend thereof is open and terminates in an upwardly extending annulaflange 7. This shell 5 rests on a supportin plate '8. Formed integralwith the flange? at one side thereof is an upwardly extending wall 9which limits the flow of the water in one direction. Communicating withthe shell 5 adjacent the wall 9 is a vertically extending pipe 10through which the water or other fluid passes.

Rotatably mounted in the shell'5 is a roto designated as a whole by thenumeral 11. This rotor comprises upper and lower disks 12 and 13 whichare horizontally disposed. The lowermost disk is provided with adownwardly extending tubular flange 142 which directs the water betweenthe upper and lower disks. Interposed between these disks is a pluralityof longitudinally curved blades 15. Also interposed between these disksand between the blades 15 are relatively short blades 16 which do notextend entirely across the disks. The upper disk 12 is formed with athreaded socket 17 in which is threaded a shaft 19 which is mounted inbearings 20 arranged on the pipe 10. A pulley 21 is fixed to rotate withthe shaft 19 and is adapted to receive a belt or other would otherwisebe the case.

It will be manifest that as the water or other fluid passes between thedisks 12 and 13 and as the shaft 19 is rotated, the water will flowbetween the blades 15 and 16 which will force the same up through thepipe 10.

Connecting the upper edge of the flange 7 with the top wall of thecasing are a plurality of dams designated 18 which are curved reverselyto the blades 15 and 16 and are. adapted to momentarily interrupt thecentrifugal flow of the water impelled by said blades and to direct suchwater outwardly toward the outer walls of the casing. The reaction, dueto the resistance of these dams causes the pressure to increase indirect ratio to the speed of the runner and this pressure increase willenable the pump to elevate a column of water with greater speed and towork against a higher head than The continuity of the water coursearound the space provided between the flange 7 and the outer wall-ofthecasing. is interrupted by the partition wall 9. The purpose of thispartition wall is toentirely separate and keep from contact the lowpressure water at the be ginning of the water course from the higherpressure water at the outlet, thereby preventing the equalizing effectthat the two 1 bodies of unequal pressure would exert on each other ifin contact. Such contact would by friction, adhesion and interminglingof the waters, decrease the pressure of the high pressure body of waterwhich in this case would be the discharge water at its point of exitfrom the pump chamber.

From the foregoing it will be evident that the water or other fluidpasses between the disks 12 and 13 and is impelled by the blades 15 and16 against the dams 13 and outwardly through the spaces between saiddams against the outer wall of the easing Copies of this patent may beobtained for and subsequently into the discharge pipe. As previouslymentioned, the dams 13 by moi'nenta'rily' interrupting the centrifugalflow of the water cause a reaction or pressure against the blades 15 and16 which adds to the lifting power of the pump owing to the pressurecaused by such resistance.

This form of the invention is illustrativeonly and it is to beunderstood that the invented idea maybe carried out in othereonstructions that may be fairly embodied in the claims herewithappended.

I claim:

1. A pump including a horizontal casing having a central opening formedin the bottom wall thereof, a vertical flange surrounding said opening,a-plurality of spaced dams connecting said flange with the upper wall ofthe casing, and an impeller rotatable within said flange and including aplurality of blades adapted to direct the water against said dams andoutwardly through the spaces therebetween.

2. A centrifugal pump, including a horizontal casing provided with acentral inlet opening in the bottom wall thereof, a vertical flangesurrounding said opening, a water passage surrounding said flange andhaving an outlet communicating therewith, a part-ition interrupting thecontinuity of said water passage adjacent said outlet, a plurality ofdams connecting the upper edge of said flange with the top wall of thecasing, and an impeller rotatable within said flanges and dams, saidimpeller including a pair of superimposed disks, a plurality of bladesconnecting said disks, and an inlet depending from one of said disks. v

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses. v

. JAMES D. BELL.

Witnesses:

ANDREW R. BnAcK', BURR WILLIAMS.

five cents each, by addressing the Commissioner of Patents Washington,I); 0'.

